Results 1 to 10 of about 71,141 (311)

Damage severity for cracked simply supported beams

open access: yesFracture and Structural Integrity, 2021
This paper investigated the static and dynamic behaviors of isotropic cracked simply supported beam using finite element analysis (FEA), ANSYS software.
Ehab Samir Mohamed Mohamed Soliman
doaj   +4 more sources

DIM for Detecting Cracks in Masonry Piers with Different Crack Patterns [PDF]

open access: yesJES: Journal of Engineering Sciences, 2022
In the Framework of identifying defects in structures, Damage Index Method (DIM) is considered one of the trustable tools used intensively. In the present research, DIM – modal displacement based - was applied on experimental data to detect damage for ...
Ahmed Anwar   +2 more
doaj   +1 more source

Determining the Severity of Open and Closed Cracks Using the Strain Energy Loss and the Hill-Climbing Method

open access: yesApplied Sciences, 2022
Evaluating the integrity of structures is an important issue in engineering applications. The use of vibration-based techniques has become a common approach to assessing cracks, which are the most frequently occurring damage in structures. When involving
Cristian Tufisi   +6 more
doaj   +1 more source

Mode I stress intensity factor with various crack types

open access: yesFracture and Structural Integrity, 2022
Presence of cracks in mechanical components needs much attention, where the stress field is affected by cracks and the propagation of cracks may be occurred causing the damage.
Ehab Samir Mohamed Mohamed Soliman
doaj   +1 more source

Quantification of cracks in beams on the Pasternak foundation using Haar wavelets and machine learning [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2022
The inverse problem of crack identification, localisation and severity quantification is addressed in this article. The open cracks are simulated numerically in a homogeneous Euler–Bernoulli beam. The beam rests on the Pasternak foundation.
Helle Hein, Ljubov Jaanuska
doaj   +1 more source

A Severe Complication of Crack Cocaine Use [PDF]

open access: yesCanadian Respiratory Journal, 2015
The present report describes a 48‐year‐old woman with a history of recurrent ‘crack’ cocaine use, who developed progressive shortness of breath over a period of years. Serial imaging revealed progressive interstitial fibrosis secondary to recurrent alveolar hemorrhage and inflammation from crack cocaine.
Gokul Vidyasankar   +3 more
openaire   +3 more sources

Severely Corroded RC with Cover Cracking [PDF]

open access: yesJournal of Structural Engineering, 2013
It is not uncommon that cover cracking, spalling, and delamination occur in many corroding RC structures. Previous research has mainly been concerned with corrosion levels leading to cover cracking along the main reinforcement, whereas corrosion of stirrups is often overlooked.
Dario Coronelli   +2 more
openaire   +1 more source

Modal displacement vs Curvature functions as damage identifier for masonry structures

open access: yesAlexandria Engineering Journal, 2023
Identification of crack location and severity is a vital step in assessment of deteriorated structures. The current research addresses the sensitivity of using modal displacement, modal curvature, and modal strain energy functions as Damage Indices (D.I ...
A.M. Anwar, A.M.A. Abd Elwaly
doaj   +1 more source

Research on Damage Identification of Nonuniform Microcrack in Beam Structures

open access: yesAdvances in Civil Engineering, 2021
Nonuniform microcrack identification is of great significance in mechanical, aerospace, and civil engineering. In this study, the nonuniform crack is simplified as a semielliptical crack, and simplified calculation methods are proposed for damage ...
Jia Guo, Deqing Guan, Yanran Pan
doaj   +1 more source

Childhood trauma subtypes may influence the pattern of substance use and preferential substance in men with alcohol and/or crack-cocaine addiction

open access: yesBrazilian Journal of Psychiatry, 2022
Objective: To compare the prevalence and subtypes of childhood maltreatment (CM) between individuals with and without substance use disorder (SUD) and investigate the influence of different traumas on the preferential use of substances and the severity ...
Aline Hoffmann   +5 more
doaj   +1 more source

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